Goodwill and Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Sep. 30, 2015
IntangibleAssets [Line Items]
Gross Carrying Amount	$ 9,766	$ 5,940
Accumulated Amortization	1,907	1,217
INTANGIBLE ASSETS, net of amortization	7,859	4,723
Trademarks And Trade Names [Member]
IntangibleAssets [Line Items]
Gross Carrying Amount	554	200
Accumulated Amortization	44	9
INTANGIBLE ASSETS, net of amortization	$ 510	$ 191
Trademarks And Trade Names [Member] | Maximum [Member]
IntangibleAssets [Line Items]
Estimated Useful Lives	8 years	8 years
Technical Library [Member]
IntangibleAssets [Line Items]
Estimated Useful Lives	20 years	20 years
Gross Carrying Amount	$ 400	$ 400
Accumulated Amortization	51	41
INTANGIBLE ASSETS, net of amortization	349	359
Customer Relationships [Member]
IntangibleAssets [Line Items]
Gross Carrying Amount	6,524	3,600
Accumulated Amortization	1,154	788
INTANGIBLE ASSETS, net of amortization	$ 5,370	$ 2,812
Customer Relationships [Member] | Maximum [Member]
IntangibleAssets [Line Items]
Estimated Useful Lives	15 years	12 years
Customer Relationships [Member] | Minimum [Member]
IntangibleAssets [Line Items]
Estimated Useful Lives	8 years	8 years
Covenants Not to Compete [Member]
IntangibleAssets [Line Items]
Estimated Useful Lives	3 years	3 years
Gross Carrying Amount	$ 140	$ 140
Accumulated Amortization	140	121
INTANGIBLE ASSETS, net of amortization	$ 0	$ 19
Developed Technology [Member]
IntangibleAssets [Line Items]
Estimated Useful Lives	4 years	4 years
Gross Carrying Amount	$ 400	$ 400
Accumulated Amortization	308	258
INTANGIBLE ASSETS, net of amortization	$ 92	142
Order Backlog [Member]
IntangibleAssets [Line Items]
Estimated Useful Lives	1 year
Gross Carrying Amount	$ 321
Accumulated Amortization	107
INTANGIBLE ASSETS, net of amortization	$ 214
Construction Contract Value [Member]
IntangibleAssets [Line Items]
Estimated Useful Lives	1 year
Gross Carrying Amount	$ 227
Accumulated Amortization	103
INTANGIBLE ASSETS, net of amortization	124
Trademarks And Trade Names [Member]
IntangibleAssets [Line Items]
Gross Carrying Amount	1,200	1,200
Accumulated Amortization	0	0
INTANGIBLE ASSETS, net of amortization	$ 1,200	$ 1,200